#resImage_84 {
    display:block;
    overflow:hidden;
    background-image:url('https://www.conveyorrollers.co.uk/assets/images/f/stainless-steel-rollers-1ce5f19d.jpg');
    background-repeat:no-repeat;
    background-position:center center;
        width:100%;
    background-size: cover;
        height:380px;
}
@media screen and (min-width:700px){
    #resImage_84 {
        background-image:url('https://www.conveyorrollers.co.uk/assets/images/0/stainless-steel-rollers-fb852859.jpg');
                height:300px;
    }
}
@media screen and (min-width:980px){
    #resImage_84 {
        background-image:url('https://www.conveyorrollers.co.uk/assets/images/1/stainless-steel-rollers-2fb87fe0.jpg');
                height:580px;
    }
}
@media screen and (min-width:1400px){
    #resImage_84 {
        background-image:url('https://www.conveyorrollers.co.uk/assets/images/b/stainless-steel-rollers-f0c05868.jpg');
                height:580px;
    }
}